Diagnosis Procedure

1. Turn Ignition Switch OFF.
2. Check that the following fuse is not blown (open).
   2.0L TURBO GASOLINE ENGINE
   
   

   Power Source	Fuse No.	Capacity
   Battery	No. 84	15 A
   Ignition Switch ACC	No. 93*	10 A
   Ignition Switch ON	No. 77	10 A

   * : Without navigation system

   VR30DDTT
   
   

   Power Source	Fuse No.	Capacity
   Battery	No. 7	15 A
   Ignition Switch ACC	No. 1*	10 A
   Ignition Switch ON	No. 14	5 A

   * : Without navigation system

Is the fuse blown (open)?

YES 

Replace fuse after repairing the applicable circuit.

NO 

GO TO STEP 2  .

1. Turn Ignition Switch OFF.
2. Disconnect display Control Unit harness connector.
3. Check the voltage between display Control Unit harness connector and ground.

   Terminals			Voltage
   (+)		(-)
   Display Control Unit
   Connector	Terminal
   M100	34	Ground	Battery voltage

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Perform trouble diagnosis for battery power supply circuit.

1. Turn Ignition Switch ON.
2. Check the voltage between display Control Unit harness connector and ground.

   Terminals			Voltage
   (+)		(-)
   Display Control Unit
   Connector	Terminal
   M100	33	Ground	Battery voltage

Is the inspection result normal?

YES 

GO TO STEP 4  .

NO 

Perform trouble diagnosis for accessory power supply circuit.

Check the voltage between display Control Unit harness connector and ground.

Is the inspection result normal?

YES 

GO TO STEP 5  .

NO 

Perform trouble diagnosis of ignition power supply circuit.

1. Turn Ignition Switch OFF.
2. Check the continuity between display Control Unit and ground.

   Terminals			Continuity
   (+)		(-)
   Display Control Unit
   Connector	Terminal
   M100	22	Ground	Existed

Is the inspection result normal?

YES 

INSPECTION END

NO 

Repair or replace malfunctioning parts.